package com.network.chatsoft.interceptor;

import com.alibaba.fastjson.JSON;
import com.network.chatsoft.entity.R;
import com.network.chatsoft.exception.LoginException;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession session=request.getSession();
        if (session.getAttribute("username") != null) {
            return true;
        }
        throw new LoginException("请先登录");
    }
}
